diff --git a/src/main/java/jota/IotaAPIProxy.java b/src/main/java/jota/IotaAPIProxy.java
index 52af878..5c0c47d 100644
--- a/src/main/java/jota/IotaAPIProxy.java
+++ b/src/main/java/jota/IotaAPIProxy.java
@@ -287,8 +287,7 @@ public class IotaAPIProxy {
      * @param {int} minWeightMagnitude
      * @return
      */
-    public List<Transaction> sendTrytes(final String trytes, final int minWeightMagnitude) {
-        
+    public List<Transaction> sendTrytes(final String[] trytes, final int minWeightMagnitude) {
         final GetTransactionsToApproveResponse txs = getTransactionsToApprove(minWeightMagnitude);
         
         // attach to tangle - do pow
@@ -443,7 +442,7 @@ public class IotaAPIProxy {
 
             //  Case 1: user provided inputs
             //  Validate the inputs by calling getBalances
-            if (!inputs.isEmpty()) {
+            if (inputs != null && !inputs.isEmpty()) {
 
                 // Get list if addresses of the provided inputs
                 List<String> inputsAddresses = new ArrayList<>();
@@ -453,7 +452,6 @@ public class IotaAPIProxy {
 
                 GetBalancesResponse resbalances = getBalances(100, inputsAddresses);
                 String[] balances = resbalances.getBalances();
-                
 
                 List<Input> confirmedInputs = new ArrayList<>();
                 int totalBalance = 0; int i = 0;
@@ -502,7 +500,7 @@ public class IotaAPIProxy {
             return bundleTrytes;
         }
     }
-    
+
     /**
     *   Gets the inputs of a seed
     *
@@ -628,7 +626,7 @@ public class IotaAPIProxy {
             bundleTrytes.add(IotaAPIUtils.transactionTrytes(element));
         }
 
-        return sendTrytes(bundleTrytes.get(0), minWeightMagnitude);
+        return sendTrytes(bundleTrytes.toArray(new String[bundleTrytes.size()]), minWeightMagnitude);
     }
 
     /**
@@ -648,6 +646,13 @@ public class IotaAPIProxy {
         return getInclusionStates(hashes, latestMilestone);
     }
 
+    public Transaction[] sendTransfer(String seed, int depth, int minWeightMagnitude, Transfer[] transactions, Input[] inputs, String address) {
+
+        List<String> trytes = prepareTransfers(seed, Arrays.asList(transactions), address, Arrays.asList(inputs));
+        List<Transaction> trxs = sendTrytes(trytes.toArray(new String[trytes.size()]), minWeightMagnitude);
+        return trxs.toArray(new Transaction[trxs.size()]);
+    }
+
     public static class Builder {
 
         String protocol, host, port;
diff --git a/src/test/java/jota/IotaAPIProxyTest.java b/src/test/java/jota/IotaAPIProxyTest.java
index ffb52ac..02ab732 100644
--- a/src/test/java/jota/IotaAPIProxyTest.java
+++ b/src/test/java/jota/IotaAPIProxyTest.java
@@ -6,6 +6,7 @@ import jota.dto.response.*;
 import jota.model.Transfer;
 import org.hamcrest.core.Is;
 import org.hamcrest.core.IsNull;
+import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -162,12 +163,15 @@ public class IotaAPIProxyTest {
     public void shouldPrepareTransfer() {
         List<Transfer> transfers = new ArrayList<>();
         transfers.add(new jota.model.Transfer(TEST_ADDRESS_WITH_CHECKSUM, 0, TEST_MESSAGE, TEST_TAG));
-        proxy.prepareTransfers(TEST_SEED, transfers, null, null);
+        transfers.add(new jota.model.Transfer(TEST_ADDRESS_WITH_CHECKSUM, 1, TEST_MESSAGE, TEST_TAG));
+        List<String> trytes = proxy.prepareTransfers(TEST_SEED, transfers, null, null);
+        Assert.assertNotNull(trytes);
+        assertThat(trytes.isEmpty(), Is.is(false));
     }
 
     @Test
     public void shouldSendTrytes() {
-        proxy.sendTrytes(TEST_TRYTES, 18);
+        proxy.sendTrytes(new String[]{TEST_TRYTES}, 18);
     }
 
     @Test